basic menu working

main/system.h

@@ -12,10 +12,13 @@ enum
     ANGLE_YZ,
 };
 
+
+
 typedef struct
 {
     float raw[3];
     float filtered[3];
+    float angle;
 } ImuData_t;
 
 typedef struct SystemState_s
@@ -23,9 +26,12 @@ typedef struct SystemState_s
 	ImuData_t imu;
 
 	EventGroupHandle_t event;
+
+
 } SystemState_t;
 
 
+#define MAX_INDICATION_ANGLE    10.0f
 
 #define EM_MAX_SUBSCRIBERS 8    // tweak as needed
 #define EM_EVENT_NEW_DATA   (1UL<<0)